Genetic characterization of patients with Bernard-Soulier syndrome and their relatives from Southern Iran

A. Afrasiabi, A. Lecchi, A. Artoni, M. Karimi, E. Ashouri, F. Peyvandi, P. M. Mannucci

Research output: Contribution to journalArticle

Abstract

Bernard-Soulier syndrome (BSS) is a rare recessively inherited bleeding disorder caused by the deficiency of the platelet glycoprotein (Gp) complex Ib/IX/V that is the von Willebrand factor receptor on platelets. In patients suffering from BSS platelet adhesion is typically impaired, while platelet aggregation is normal; macrothrombocytopenia is a common feature. In this study three different families from Southern Iran were investigated. GpIb/IX/V platelet expression as detected by flow cytometry was less than 2% of normal in six cases and 12% in the remaining one. Platelet count was 35 000 platelets/microliter and iron deficiency anemia was common. All patients suffered from mucocutaneous bleeding at presentation and were born from consanguineous marriages. Genetic analysis demonstrated the presence of the same GpIX Phe55Ser missense mutation in two families and of a single base insertion (GP1BA C3221 ins), a never described mutation causing a frameshift in the GpIbα gene, in the third family. Among the family members studied several heterozygotes were identified. None of them, with one exception, had macrothrombocytopenia. In one family a slight reduction of GpIb/IX/V expression was observed.

Original languageEnglish
Pages (from-to)409-413
Number of pages5
JournalPlatelets
Volume18
Issue number6
DOIs
Publication statusPublished - Sep 2007

Keywords

  • Bernard-Soulier syndrome
  • Genetic analysis
  • Heterozygous carrier

ASJC Scopus subject areas

  • Hematology
  • Cell Biology

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